![background image](http://html1.mh-extra.com/html/steren/her-400/her-400_manual_1373361016.webp)
3
1.- CONTROLS
1. Filter
If you use this device with a wind speed above
10 m/sec (22 mph). Please use the protection
filter in order to avoid outside noises in the
measurement.
2. Microphone
3. Screen
Displays the information about measurements.
4. Power
Powers the device on/off.
5. Maximum Button
Press this button in order to select if you want to view the maximum
measure
data.
6. A/C
Press the A/C button in order to change between general measurement and
measurement in an acoustic environment.
7. Measuring Time
For real-time measurement, select FAST. For general measurements, select
SLOW.